- SlashingArbiter
- |
- Exalted Legendary Member
Bungie.net shows that you got the achievement on Friday, October 2, 2009 in this game. For the game you linked, your friend (or your second account) got the achievement on Sunday, May 23, 2010 (today) in this game. So Bungie.net is showing that both gamertags have unlocked Endure... is the problem why you're not seeing the "Unlock Recon" button?
Edit - it seems to be, because the gamertag "MalcoIm" is not linked to a Bungie.net account. Once you link the gamertag, you should see the "Unlock Recon" button.
[Edited on 05.23.2010 9:57 PM PDT]